currently state law only makes these iid devices optional for offenders. reporting live from redwood city, back to you. >>> everything is back to normal at b.a.r.t. after a train caused systemwide delays. there were some mechanical problems around 7 a.m. this morning between balboa park and daly city. 10 passengers were stuck a little over an hour. crews were able to moved train off the tracks at 9:00. delays were as long as 30 minutes. >>> san francisco's municipal railway marks its 100th anniversary today and to celebrate muni is providing free rides to everyone on board that. includes all the buses, light rain lines and yes, even the cable cars are free. while some riders have their gripes, they are grateful for the free ride today. >> i know muni gets a lot of flack for not always being on time, but it generally gets me where i'm going. so i just hope they can maybe be a little more on time on their 100th anniversary and i'll be excited. >> i think it's great that they're celebrating in a way that helps everyone, too. everyone can participate in the bi